Which of the following group 2 elements has the lowest first ionization energy?
(1) be (3) ca
(2) mg (4) ba

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

Which element would mostly likely have an electron affinity measuring closest to zero